In a triangle with sides a,b,ca, b, ca,b,c, if a2=b2+c2+3bca^2 = b^2 + c^2 + \sqrt{3}bca2=b2+c2+3bc, what is the measure of angle AAA?
150∘150^\circ150∘
120∘120^\circ120∘
60∘60^\circ60∘
30∘30^\circ30∘